Mine-shaft safety device



G. M. JOHNSON.

MINE SHAFT SAFETY DEVICE.

APPLICATION FILED JULY 23, 1913.

1,333,921 Patented Mar. 16, 1920.

2 SHEETS-SHEET l.

WITNESS G. M. JOHNSON.

MINE SHAFT SAFETY DEVICE.

APPLICATION FILED JULY 23. 1918.

.1 333,921 Patented Mar. 16, 1920.

m 29 127 6 T L31 WITH ISS GEORGE M. JOHNSON, 9F MCDONALD, PENNSYLVANIA.

MINE-SHAFT SAFETY DEVICE.

Application filed July 23, 1918.

To all whom it may concern:

Be it known that I, Gnonon M. JOHNSON, a citizen of the United States, residing at McDonald, in the county of Washington and State of Pennsylvania, have invented certain new and useful Improvements in Mine-Shaft Safety Devices, of which the following is a specification.

This invention relates to mine shaft safety device for use in connection with lander and car feed controlling mechanisms for mine cages, and has for its object to provide means, in a manner as hereinafter forth. for simultaneously shifting the lander mechanism and the trip element of a car feed controlling mechanism to a position, to en.- able the mine cage during its elevating or lowering movement to clear said lander mechanism and trip element, under such conditions not interrupting the passage of the cage or injuring the car feed controlling mechanisms.

A further object of the invention is to provide a safety device for the purpose set forth including means having provisions to prevent the operation of the trip element referred to when the landers of a lander mechanism are shifted by the mine cage on the ascent of the latter.

Further objects of the invention are to provide a safety device for the purpose set forth, which is simple in its construction and arrangement, conveniently operated at a landing, strong, durable, efficient. in use,

readily set up and comparatively inex-v pensive. With the foregoing and other. objects in view this invention consists of the novel construction, combination and arrangement of parts, as hereinafter more specifically described. and illustrated in the accompanying drawings, wherein is shown an embodiment of the invention, but it is to be understood that changes, variations and modifications can be resorted to which come within the scope of the claims hereunto appended.

In the drawings wherein like reference characters denote corresponding parts throughout the several views:

Figure 1 is a plan View of a safety device for the purpose set forth showing the adaptation of such device in connection with lander and carfeed controlling mechanisms.

Fig.2is an elevation, partly in section, of

Specification of Letters Patent.

Patented Mar. 16, 1920.

Serial No. 246,367.

the safety device showing the adaptation thereof in connection with lander and car feed controlling mechanisms.

Fig. 3 is a section on line III IH, Fig.

Fig. l is a sectional detail.

T he safety device is employed at the landings arranged at the top and bottom and intermediate the top and bottom of a mine .--haft and is adapted when actuated to shift the landers of a lander mechanism and a tripping element for a car feed controlling mechanism, the tripping element separately or simultaneously with the landers, clear of the path of a mine cage during its ascent or descent, wherebythe movement of the cage will not be retarded or interrupted orthe cage injured. or whereby the car feed controlling mechanism will not be injured during the ascent of the cage or the lenders on the descent of the cage.

Referring to the drawings in detail 1, 2 and 3, denote the cross-ties of a landing, which may be at the top or bottom or intermediate the top or bottom of the mine shaft, and upon which is mounted a car feed controlling mechanism referred to generally by the reference character A, said mechanism being' somewhat similar in constructionto that disclosed in my application for Letters Patent Serial No. 224-,ret3, Mar. 26, 1918, difference residing in the construction of and operation of the car stop'bloclrs and the means connected'to the'blocks for shifting them. Such construction of stop blocks and. the means connected directly with the stop blocks for operating them will. be made the subject matter of a subsequent application, and as no claim is made herein to the car feed controlling mechanism which includes the stop blocks and the means directly connected therewith for operating said blocks, it is thought unnecessary to specifically describe said mechanism, other than reference to the rock shaft 4, upon which is mounted an oscillatory and longitudinally movable trip arm or crank 5, which is adapted'to be tripped by the mine cage to rock the shaft 4, to actuate said mechanism. The track rails at the landing are arranged at 6, 7.

The tie or support 1, has its outer face formed with a pair of pockets 8, in which are shifted the shouldered upper ends 9, of a pair of landers 10, secured on a rock-shaft 11, journaled in bearings 12, fixed to a suppivotally connected to the actuating port 18, arranged below the tie 1. The shaft 11, one end has a counter-weighted crank ann ll, which normally retains the landers 10, clear of the pockets 8, and in the path of travel of the mine cage. The other end of the shaft 11, has a crank arm 15, provided at its upper end with apin 16, which extends t iron "11 a curved slot 17, formed in the angular forward end 18, of a link 19. provided with a pin 20, extending'through the slotted lower end 21, of a crank arm 22. carried by rock shaft :23, mounted Ii bracketc 25, which are secured to the tie 1, at the rear thereof. The rear end of the link 19, pivotally connected as at 26. to an adjustable actuating lever 27. which. is pivotally connected at its lower end, as at :28, to a bracket Qlh secured to a support 30. The link 19, is lever 27, tear the 1owcr end thereof. The lever 27, extends up through a pair of a i ortured loek-barsBl, and can be retained in adjusted position by stop pins which. exteml through the bars 31.

lVhen the lever 27, is shifted to the position shown in Fig. the landers have their upper ends moved into the pockets 8. whereby the landers 10. will be clear of the path of travel of the mine cage. The shifting of the lever 27, is against the action of the counterweighted crank 14.

The tie 1, is cut away at 38, to form a seat or pocket for the trip arm or crank 5, to receive the letter when depressed. The arm normally extends into the path of travel of the mine cage so that i'" can be shifted by the .atter to rock the shaft ll. The arm 5 has a hub 34, which is keyed upon the shaft t as at yand is capable of being shifted longitudinally 011 said shaft 1-, whereby the arm 5. can be moved to a position clear of the path of travel 0 ie'nrine cage. A stop 35, is providedto linni; inward movement of the hub 34. The arm is normally inan. elevated osition.

The hub l, near its inner end has a peripheral groove 36. into which extends the angular end 37, of a shifting arm for the 11D- trip arm'f). The shifting arm 38, em-

ployed for moving the hub 3i, inwardly and outwardly in alongitudinal direction on the shaft 4, and is also einployedfor"limiting the outward movement of the hub 34. and further'for inaintaining the trip arm in the path of travel of the niinecage. When the shifting arm 88, is actuated to move the hub 34:, inwardly on the shaft 4, the trip arm will be carried inwardly to such an extent that it will be clear of the path of travel of the mine cage, whereby the arm 5. will not he tripped to actuate the car feed controlling mechanisms and further not interfere with the travel of the mine cage; 5

Y The arm 38,- is fixed to the upper end of an actuating shaft 39, which is supported in the tie l, and extends above and below the same.

The lower end of the shaft 39 has a crank arm l0, which is loosely connected as at 4.1, to a crank arm l2, projecting downwardly from the shaft By this arrangement when the lever arm 27, is moved to the position shown in Fig. 3, the shaft 23, will be actuated carrying the crank arm el2, therewitln w iich in turn will shift the crank arm -lO,-and actuate the shaft 39, whereby the shi 'ng arm 38 will be moved inwardly carrying the trip arm 5 therewith.

When the l ver 27, is released the counterweighted crank ll, will shift the shaft 11. and through the connections between said shaft 11. lever 27, shaftflfi, and shaft 39, the lever 27 will be moved to a position opposite to that shown in Fig". 3. whereby the lenders 10 will be projected into the path of travel of the mine cage, and the shaft 39, actuated to 11love the shifting arm 38, outwardly, which will shift the trip arm 5, to position in the path of travel of the mine cage.

The curved slot 17, in the angular fo1' ward end 18, of the link arm 19, is of suffirient length to permit of the shifting of the pin 16, therein, without operating link 19,

when the lander elements 10 are shifted by the cageon its ascent by this arrangement the landers are operated independently of the shifting arm 38.

lVhat I claim is:

1. A safety device for the purpose set forth comprising the combination with the trip elen'ient of a car feed controlling mechanism, said element normally positioned in the path of travel of the mine cage, of means operatively. connected with said elementand adapted when actuated to shift the element from and to normal position, a stop for limiting the inward movement of said element, and said means limiting' the outward movement of said element.

A. safety device for the purpose set forth comprising the combination with a' counterweighted shaft provided with lander elements, and an oscillatory and longitudi nally movable trip element for a car feed controlling-Inechanism. of means operatively connected with said element and shaft for sinmltaneously shifting them to move the said elements out of the path of travel of a mine cage. V

A. safety device comprising arock shaft. an oscrllatoryand longitudinallyinovable trip element mounted on said shaft,-a

vertically disposed 1 shaft. an oscillatory shifting arm carried by the vertical shaft and engaging in said element for shifting it from and to the path of travel of a mine cage. a. (.(Hilltel'wlghl'etl rock-shaft, lander 7 elements carried thereby and normally pr jeli olll gf in the path of travel of a mine cage,

and a means operatively conneetedwith said vertical shaft and said counter-weighted rock-shaft for actuating them to simultaneously shift them clear of the path of travel of a mine cage.

4:. A safety device comprising an oscillatory and longitudinally shiftable trip element for a car feed controlling mechanism, said element normally projecting in the path of travel of a mine cage, an oscillatory shift.- ing arm engaged in said element and adapted when operated to move said element from and to the path of travel of a mine cage, a vertically disposed shaft having said arm connected to the upper end thereof, a crank arm at the lower end of said shaft, andnieans for actuating the crank arm to operate the shaft to shift said arm to move said element from and to the path of travel of a mine cage.

5. A safety device for the purpose set forth comprising the combination with a trip element of a car feed controlling mechanism, said tripping element normally extending into the path of travel of a mine cage, and a lander mechanism including lander elements normally positioned in the path of travel of a mine cage, of means operatively connected with said element and mechanism for shifting-said elements simultaneously to move them out of the path of travel of a mine cage.

6. A safety device for the purpose set forth comprising the combination with the trip element of a car feed controlling mechanism, said tripping element normally extending into the path of travel of a mine cage and lander mechanism including lander elements normally positioned in the path of travel of a mine cage, a shifting mechanism operatively connecting said element and lander mechanism together wherehy when the shifting mechanism is actuated said trip element and lander elements will he shifted clear of the path of travel of a mine cage, and a lever for operating said shifting mechanism.

7. A safety device for the purpose set forth comprising the combination with the trip element of a car fee-d controlling mechanism, said tripping element normally extending into the path of travel of a mine cage and a lander mechanism including lenders normally positioned in the path of travel of a mine cage, a shifting mechanism operatively connecting said element and lander mechanism together whereby when the shifting mechanism is actuated said trip clement and lander mechanism will he shifted clear of the path of travel of a mine cage, and a lever for operating said shifting mechanism, and said lander mechanism including a counterweighted shaft for shifting said element and lander mechanism in the path of travel of a mine cage when said lever is released.

8. A safety device for the purpose set operatively connecting said element and lander mechanism together whereby when the shlfting mechanism is actuated said trlp element and lander mechanism will he shift ed clear of the path of travel of a mine cage, and a lever for operating said shifting mechanism, said shifting mechanism pivotally and adjustably connected with the lander mechanism and pivotally and slid ably engaging with said trip element.

9. A safety device for the purpose set forth comprising an oscillatory and a longitudinally sh'iftahle trip arm provided with a. hub formed with a peripheral groove, a shifting arm having one end engaging in said groove for longitudinally shifting the trip arm when the shifting arm is actuated, a shaft for actuating the trip arm, and means operatively engaging with one end of said shaft for operating it to actuate said shifting arm.

10. A safety device for the purpose set forth comprising an oscillator Y and a longitudinally shiftable trip arm provided with a hub formed with aperipheral groove, a shifting arm having one end engaging in said groove for longitudinally shifting the trip arm when the shifting arm is actuated, a shaft for actuating the trip arm, means operatively engaging with one end of said shaft for operating it to actuate said shifting arm, and a lever for operating said means.

11. A safety device for the purpose set forth comprising an oscillatory and a longitudinally shiftable trip arm provided with a hub formed with a peripheral groove, a shifting arm having one end engaging in said groove for longitudinally shifting the trip arm when theshifting arm is actuated, a shaft for actuating the trip arm, means operatively engaging with one end of said shaft for operating it to actuate said shifting arm, a lever for operating said means, and a stop for limiting the inward movement of said hub, said hifting arm limiting the outward movement of said hub.

12. A safety device for the purpose set forth comprising a trip element shifting arm, a lander element shifting mechanism, and an actuating mechanism operatively connected with said lander mechanism and shifting arm for simultaneously operating them, said actuating mechanism having provisions to prevent the operation thereof when the lander mechanism is operated by a mine cage on the ascent of the latter.

13. A safety device for the purpose set forth. comprising the combination with a counterweighted shaft provided with lander elements, and an oscillatory and longitudinally movable trip element for a car feed controlling mechanism, of means operatively connected with said element and shaft for simultaneously shifting them to move the said elements out of the. path of travel of a mine cage, said means having provisions to prevent the operation thereof when the landerclements areshifted by a mine cage on the ascent of the latter.

1%. A, safety device comprising a rockshaft, an oscillatory and longitudinally movable trip clement mounted on said shaft, avertically disposed shaft, an oscillatory shifting arm carried by the vertical shaft and engaging in said element for shifting it from andto the path of travel of a mine cage, a connterweighted rock shaft, lander elements carried thereby and normally projecting in the path of travel of amine cage, and a means: operatively connected with said vertical shaft and said counterweighted rock-shaft for actuating them to simultaneously shift them clear of the path of travel of a mine cage, said means having provisions to prevent the operation thereof when the lander elements are shifted by a mine cage on the ascent of the latter.

15'. A safety device for the purpose set forth comprising the combination with the trip element of a car feed controlling mechanism, said tripping element normally extending into the path of travel of a mine cage, and a lander mechanism including lander elements normally positioned in the path of travel of a mine cage, of means 0peratively connected with said element and mechanism for shifting said elements simultaneously to move them out of the path of travel of a mine cage, said means having provisions to prevent the operation thereof when the lander elements are shifted by a mine cage on the ascent of the latter.

16. A safety device for the purpose set forth comprising the combination with the trip element of a car feed controlling mechanism, said tripping element normally extending into the path of travel of a mine cage and a lander .mechanism including lander elements normally positioned in the path of travel of a mine cage, a shifting mechanism operatively connecting said element and lander mechanism together whereby when the shifting mechanism is actuated said trip element and lander elements will be shifted clear of the path of travel of a mine cage, and a'lever for operating said shifting mechanism, said means having provisions to prevent the operation thereof when the lander elements are shifted by a mine cage on the ascent of the latter.

' In testimony whereof I affix my signature.

oatonen JOHNSON. 

